Abstract
We present in the framework of supergravity a natural model of chaotic inflation and baryogenesis, which are driven by a right-handed sneutrino. Its mass of M ∼ 10 13 GeV is consistent with both the COBE data and the Mikheyev-Smirnov-Wolfenstein solution to the solar neutrino problem. In this model the supersymmetry is easily broken by adding a constant term in the superpotential but with a vanishing cosmological constant. In addition, the model prefers the material ingredients appropriate for the mixed dark matter scenario.
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